enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Rainflow-counting algorithm - Wikipedia

    en.wikipedia.org/wiki/Rainflow-counting_algorithm

    Rainflow counting identifies the closed cycles in a stress-strain curve. The rainflow-counting algorithm is used in calculating the fatigue life of a component in order to convert a loading sequence of varying stress into a set of constant amplitude stress reversals with equivalent fatigue damage.

  3. Fatigue Avoidance Scheduling Tool - Wikipedia

    en.wikipedia.org/wiki/Fatigue_Avoidance...

    The Fatigue Avoidance Scheduling Tool (FAST) was developed by the United States Air Force in 2000–2001 to address the problem of aircrew fatigue in aircrew flight scheduling. [2] FAST is a Windows program that allows scientists, planners and schedulers to quantify the effects of various work-rest schedules on human performance.

  4. PFD allowance - Wikipedia

    en.wikipedia.org/wiki/PFD_allowance

    The fatigue allowance is intended to cover the time that the worker should be given to overcome fatigue due to work related stress and conditions. There are three factors that cause fatigue: (1) physical factors like standing and use of force, (2) mental and cognitive factors like mental strain and eye strain , and (3) environmental and work ...

  5. Goodman relation - Wikipedia

    en.wikipedia.org/wiki/Goodman_relation

    Within the branch of materials science known as material failure theory, the Goodman relation (also called a Goodman diagram, a Goodman-Haigh diagram, a Haigh diagram or a Haigh-Soderberg diagram) is an equation used to quantify the interaction of mean and alternating stresses on the fatigue life of a material. [1]

  6. Critical plane analysis - Wikipedia

    en.wikipedia.org/wiki/Critical_plane_analysis

    Animation showing a series of crack orientations, each of which is evaluated for fatigue life during Critical plane analysis The chief advantage of critical plane analysis over earlier approaches like Sines rule , or like correlation against maximum principal stress or strain energy density , is the ability to account for damage on specific ...

  7. Crack growth equation - Wikipedia

    en.wikipedia.org/wiki/Crack_growth_equation

    A crack growth equation is used for calculating the size of a fatigue crack growing from cyclic loads. The growth of a fatigue crack can result in catastrophic failure, particularly in the case of aircraft. When many growing fatigue cracks interact with one another it is known as widespread fatigue damage. A crack growth equation can be used to ...

  8. Paris' law - Wikipedia

    en.wikipedia.org/wiki/Paris'_law

    Paris' law (also known as the Paris–Erdogan equation) is a crack growth equation that gives the rate of growth of a fatigue crack. The stress intensity factor K {\displaystyle K} characterises the load around a crack tip and the rate of crack growth is experimentally shown to be a function of the range of stress intensity Δ K {\displaystyle ...

  9. Roark's Formulas for Stress and Strain - Wikipedia

    en.wikipedia.org/wiki/Roark's_Formulas_for_Stress...

    The book covers various subjects, including bearing and shear stress, experimental stress analysis, stress concentrations, material behavior, and stress and strain measurement.